No. 2328. LARVAE OF THE CLERIDAE—BOVING AND CHAMPLAIN. 623 



1. HYDNOCERA SCABRA LeConte. 



TJ. S. Nat. Mus., Wash., D. C. ; labl. D. W. Coquilett 4981. Not reared 



Total length, 5 mm. Color of head capsule pale yellow, the same 

 color throughout ; prothoracic dorsal shield brown ocher, prothoracie 

 sternal plate light brown ocher; legs pale yellow; basal plate on 

 ninth abdominal segment pale yellow. Membranous parts motley 

 bluish with whitish pattern above heart and muscle attachments, 

 all abdominal segments colored alike. Setae thin and light yellowish. 

 Ninth abdominal segment with semioval, nearly semicircular basal 

 plate. Cerci not present. 



HYDNOCERA VERTICALIS Say. 



(Hopk. U. S. No. 10084c; mature. Species reared, cast skin aud imago preserved. 

 Description after cast skin.) 



(Figs. 16, 30, 43, 63, 102, 118, 120, 132.) 

 Total length, about 2-| mm. Head capsule pale yellow with ocellar 

 field and posterior third of f rons black brown, ventral hind margin 

 of epicranium and hind margin of gular plate with small blaclt 

 brown darkening; prothoracic dorsal shield pale yellow with two 

 large black brown spots on each side, adjacent to the middle line; 

 prothoracic sternal plate and presternal chitinizations pale brown; 

 leg pale yellow with black brown coxa and a black brown spot at the 

 distal end of femur, tarsus pale brown ; abdominal segment with small 

 dorsal plates; surface of epipleural lobes somewhat chitinized; 

 basal plate of ninth abdominal segment pale yellow, posteriorly grad- 

 ually darkening. Membranous parts light. Setae long, stiff, dark 

 brown. Ninth abdominal segment with semioval basal plate. 



HYDNOCERA PUBESCENS LeConte (7). 



Hunter U. S. No. 30G2F, 1. b ; possibly not mature. Species not reared.* 

 Total length, 2^ mm. Head capsule pale yellow with hind margin 

 of frons and dorsal hind margin of epicranium dark brown; pro- 

 thoracic dorsal shield brown ocher, on each side with three more or 

 less confluent dark brown spots; the anterior spot laterally at the 

 front corner of the shield, the posterior and smallest spot at the back 

 corner close to the middle line, and the median and largest spot at the 

 beginning of the hind margin right between the anterior and pos- 

 terior spots ; prothoracic sternal plate dark brown ; leg pale yellow 

 with dark brown coxa ; basal plate of ninth abdominal segment dark 

 brown, gradually changing into a median lighter field. Membranous 

 parts of meso- and metathorax variegated, blackish blue with whitish 

 pattern; first abdominal segment blackish blue with whitish muscle 

 attachments, second and third abdominal segment nearly entirely 



> Determination kindly given by Dr. W. D. Pierce. Compare bibliography. 



